Plates: Where the Lithosphere is broken into separate parts- called plates. Scientific Theory: A well tasted concept with lots of observation. Plate Tectonics: The theory which explains the Formation, movement, and subduction of the plates. Faults: Cracks in Earth's crust, where rocks have slipped past each other. Transform Boundaries: Where two plates have slipped past each other. Divergent Boundaries: Where two plates have moved apart from each other. Convergent Boundaries: Where two plates have moved into each other, or converged. Rift Valley: A deep valley that forms along convergent boundaries.
Outline
Introduction
Lithoshere is broken into pieces/sections seperated by jagged cracks, plates
J.Tuzo Wilson thought of concept
A theory of Plate Motion
Plates are in constant slow motion driven by convection currents in mantle
Plate movements create volcanoes, mountain ranges, and deep-sea trenches
Plate Boundaries
Lines where plates meet are plate boundaries
Faults are breads in earth's crust where rocks have slipped past each other
Transform Boundaries
Crust is neither created nor destroyed
Plates slip past each other going in opposite directions
Earthquakes occur frequently here
Divergent Boundaries
Plates move apart, usually occurs in mid-ocean ridge, also on land
On land, it creates a rift valley, going deeper and deeper into crust
Rift valley will someday drop enough for the sea to come in and fill the gap, seperating the land
Convergent Boundaries
Plates collide/come together, may bring together oceanic with oceanic, continental with continental, or oceanic with continental crusts.
The denser plate dives under the less dense plate (oceanic goes under continental, for oeanic and oceanic the density decides)
Continental and continental usually have same density, so they keep squeezing to make mountains
The Continents Slow Dance
Plates move from one to ten centimeters per year, as fast as fingernails grow
Table of Contents
1.5 The Theory of Plate Tectonics
Vocabulary
Plates: Where the Lithosphere is broken into separate parts- called plates.
Scientific Theory: A well tasted concept with lots of observation.
Plate Tectonics: The theory which explains the Formation, movement, and subduction of the plates.
Faults: Cracks in Earth's crust, where rocks have slipped past each other.
Transform Boundaries: Where two plates have slipped past each other.
Divergent Boundaries: Where two plates have moved apart from each other.
Convergent Boundaries: Where two plates have moved into each other, or converged.
Rift Valley: A deep valley that forms along convergent boundaries.
Outline
- Lithoshere is broken into pieces/sections seperated by jagged cracks, plates
- J.Tuzo Wilson thought of concept
- Plates are in constant slow motion driven by convection currents in mantle
- Plate movements create volcanoes, mountain ranges, and deep-sea trenches
- Lines where plates meet are plate boundaries
- Faults are breads in earth's crust where rocks have slipped past each other
- Transform Boundaries
- Crust is neither created nor destroyed
- Plates slip past each other going in opposite directions
- Earthquakes occur frequently here
- Divergent Boundaries
- Plates move apart, usually occurs in mid-ocean ridge, also on land
- On land, it creates a rift valley, going deeper and deeper into crust
- Rift valley will someday drop enough for the sea to come in and fill the gap, seperating the land
- Convergent Boundaries
- Plates collide/come together, may bring together oceanic with oceanic, continental with continental, or oceanic with continental crusts.
- The denser plate dives under the less dense plate (oceanic goes under continental, for oeanic and oceanic the density decides)
- Continental and continental usually have same density, so they keep squeezing to make mountains
- Plates move from one to ten centimeters per year, as fast as fingernails grow
- Pangea is true, now scientists support the theory
>Introduction
A theory of Plate Motion
Plate Boundaries
The Continents Slow Dance
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